POE port_fault
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‎10-15-2015 01:21 PM
Please advise if this is a software bug, but our x440-24p switch produced an error: POE port_fault and cause our access points to fail. To fix the issue the PoE had to be disable and re-enabled on the entire switch. However, the VoIP phones were no affected.
10 REPLIES 10
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‎10-15-2015 01:26 PM
To avoid what David is describing, you want a double-conversion UPS.
This type of UPS will constantly power the load (in this case the switch) from the battery, to prevent this delay between switching to the battery.
This type of UPS will constantly power the load (in this case the switch) from the battery, to prevent this delay between switching to the battery.
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‎10-15-2015 01:26 PM
FYI
We have found UPSs do not always prevent power issues, we have seen older UPSs or units with older batteries take too long to transfer to battery and as a result the switch can reboot or enter an odd state before the transfer takes place.
We have found UPSs do not always prevent power issues, we have seen older UPSs or units with older batteries take too long to transfer to battery and as a result the switch can reboot or enter an odd state before the transfer takes place.
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‎10-15-2015 01:26 PM
Brown outs don't happen often, this was unusual & it knocked out power in a development, so something outside must have happened. Yes, the switch is on a UPS, as all of our switches are.
Thanks again everyone for your assistance and pointing to great information.
Thanks again everyone for your assistance and pointing to great information.
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‎10-15-2015 01:26 PM
Do these brown outs happen often? Are the switches plugged into a UPS? I have seen the exact scenario in the past. Unfortunately this happens to prevent further issues with the switch.
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‎10-15-2015 01:26 PM
We did have a brown-out which may have caused the issue.
